Returning to the United States in the mid-70s, Boozer completed graduate work at Yale University. While studying for his PhD., he explored Greenwich Village’s gay community. And after completing his Ph.D., he became a professor of sociology at the University of Maryland. It was during this time that Boozer became more active in the D.C. gay rights scene.
In 1979, Boozer was selected to be president of the Gay Activists Alliance (GAA) of Washington, D.C., where he served two terms. Serving as the first Black GAA president, he became “a leading moderate voice among Black gays nationally.” While president of the GAA, he helped the organization win unanimous passage of the Sexual Assault Reform Act by the D. C. Council, which decriminalized sodomy and rescinded solicitation laws for consenting adults.